v6: applied=54 errors=0, read back 54/54. Ran after the v4 carve because the
provider v6 static lands on br-ex. The tool walks only the nine tagged role
nodes, so the controller's metal-admin v6 was applied separately -- restoring
ruled state the re-enrolment dropped. Its provider GUA stays deliberately absent.

Juju survey on the rack: cloud still points at the OFFICE1 region, which is what
killed bootstrap 3. juju unregister is NOT needed -- no controllers registered.

Blocker: the new region has no juju-vr1-dc0 MAAS user. Re-establishing it mints
a new API key, so it is operator-gated. Nothing was minted; the refusal was a
permission rule failing to match, not a classifier fault.

Gauntlet ALL GREEN (93); repo-lint 0 fail.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HvCyrwvYTTcDYnRErfMsNf